Abstract: Moving objects database is aimed to manage large numbers of moving objects, supporting the temporal and spatial queries which traditional database can not. This data model of moving objects database based on road network can manage the moving objects effectively, through converting the road network into digital information. The model can reflect the dynamic status of each segment, so it predicts the future positions of moving objects precisely.

Key words: Moving objects database(MOD), Road network, Management of moving objects, Data model

摘要： 移动对象数据库对大量移动对象的位置信息进行管理，能够支持传统数据库不能进行的时空查询，考虑到大多数移动对象的运动都固定在已知的路线中，基于公路网的移动对象数据模型、通过对公路网拓扑图的数字化转换，能够对移动对象进行有效的管理，该文采用实时平均法来反映每条线路的动态运行情况，对移动对象未来位置进行了精确预测。

关键词: 移动对象数据库, 公路网, 移动对象的管理, 数据模型